Banks' management of the net interest margin: evidence from Germany

In: Discussion paper

In: Series 2, Banking and financial studies 13/2011

Abstract

We decompose the change in banks' net interest margin into a change in market-wide bank rates and a change in the balance-sheet composition. Our empirical findings from a detailed data set on German banks' balance-sheet positions, broken down into different maturities, creditors and borrowers and degrees of liquidity are as follows: (i) Changes in bank rates have a much greater impact on and explain more of the variation in net interest margins than do changes in balance-sheet compositions. (ii) Changes in bank rates and changes in balance-sheet compositions affect the change in the net interest margin less strongly for derivative users than for non-users. On average, banks employ interest rate derivatives to reduce on-balance risk. (iii) When risk-taking becomes more lucrative, banks tend to increase their on-balance exposure. This effect is more pronounced for derivative users than for non-users. -- Net Interest Margin ; Banking ; Balance-Sheet Composition

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Banks' management of the net interest margin: evidence from Germany

In: Discussion paper Eurosystem

In: Ser. 2, Banking and financial studies 2011,13

Memmel, Christoph

Memmel, Christoph

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